/*
 * $Id: 296d63d6d45e47d8ad248366f101720444c3a0ef $
 *
 * This file is part of the iText (R) project.
 * Copyright (c) 2007-2015 iText Group NV
 * Authors: Bruno Lowagie et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.rups.view.itext;
import java.io.IOException;
import java.util.Observable;
import java.util.Observer;

import javax.swing.JScrollPane;
import javax.swing.JTextArea;

import com.itextpdf.rups.io.TextAreaOutputStream;
import com.itextpdf.text.pdf.PRStream;
import com.itextpdf.text.pdf.PdfObject;
import com.itextpdf.text.pdf.PdfReader;

public class StreamTextArea extends JScrollPane implements Observer {
	
	/** The text area with the content stream. */
	protected JTextArea text;
	
	/**
	 * Constructs a StreamTextArea.
	 */
	public StreamTextArea() {
		super();
		text = new JTextArea();
		setViewportView(text);
	}
	
	/**
	 * @see java.util.Observer#update(java.util.Observable, java.lang.Object)
	 */
	public void update(Observable observable, Object obj) {
		text.setText(null);
	}
	
	/**
	 * Renders the content stream of a PdfObject or empties the text area.
	 * @param object	the object of which the content stream needs to be rendered
	 */
	public void render(PdfObject object) {
		if (object instanceof PRStream) {
			PRStream stream = (PRStream)object;
			try {
				TextAreaOutputStream taos = new TextAreaOutputStream(text);
				taos.write(PdfReader.getStreamBytes(stream));
				//text.addMouseListener(new StreamEditorAction(stream));
			}
			catch(IOException e) {
				text.setText("The stream could not be read: " + e.getMessage());
			}
		}
		else {
			update(null, null);
			return;
		}
		text.repaint();
		repaint();
	}

	/** a serial version id. */
	private static final long serialVersionUID = 1302283071087762494L;

}
